The Iowa Board of Pharmacy says in a ruling released Friday that Mark Graziano’s explanation for a shortage of nearly 700,000 pills of hydrocodone was neither credible nor plausible.

Graziano’s license was suspended last year after an audit of Bauder Pharmacy in Des Moines showed the discrepancies over about four years. Graziano told the board in a February hearing that an employee may have ordered the drugs, but he had no proof.

The Des Moines Register (http://dmreg.co/12rR4U5 ) reports the pharmacy continues to operate. The board on Friday decided to keep a store ban on dispensing addictive drugs, and its overall license is on probation. The business also has been fined $25,000.